In reply to Offwidth:
I'll be interested to see how this all pans out in the future. I love guidebooks, and have bookcases full. I just picked up the set of 1937 CC Snowdonia guides (Kirkus et al). Pride of place to my CC 'Froggatt Area' guide which was the first I bought in '79 when I started climbing.
Problem is, many areas are fully developed (actually still a lot to do with guidebook development wrt bouldering, but that's a separate issue - New North Wales Bouldering please!), and have well-produced excellent guides (say, The Peak). The routing boom from 70s to 90s are, however, over, with only a trickle of (mostly) hard, new routes and choosy filler-ins in these areas. Do you think there'll be enough to justify developing new editions to these areas in the future? You're closer to producing these things than me, so probably have a better view.
For me, I can see some areas catching up with the modern production idiom, larger format, full phototopo, route descriptions on the same page with matching index numbers etc. So there would probably be room for a new N Wales CC series for example.
After that though, if the Rockfax apps integrate the online user data from UKC logbooks, then I think that's the future. Out of interest, I just downloaded the Harborough Rockfax guide, which is ok, but obviously selective (buttresses not included, no lower tier bouldering). If that gets integrated with the UKC database, then it looks a very attractive proposition.